@Logical_Error F-Droid would be a good logical choice, but I doubt they're going to go that direction. I don't think they're going to go the direction I mentioned either. I expect they've got their own store in the works. They've been working on an alternative OS for a couple years, though no one knows a lot about it. The problem is that creating their own store just fragments the market, and I don't think that will work the way they hope it will.